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KSU Research and Extension: Small grain forage options

Small grain forage options for this fall

Small grain forages can be a profitable option for producers. They can be planted in the fall and either terminated or grazed out in the early spring, allowing time to plant a summer row crop if soil moisture is adequate.

There are five common small grain options for forage: spring oats, winter wheat, winter barley, winter cereal rye, and winter triticale. Each option has strengths and weaknesses.

Spring oats. Spring oats are usually planted in late February or March in Kansas. However, spring oats can also be planted in August or early September — and if done so, they will produce much more fall forage compared to other small grain forages in the fall before a killing freeze. They will almost never produce grain if planted in August. Spring oats do not need to vernalize before heading. They will develop rapidly in the fall if they have enough moisture and fertility, and may even head out before termination by the first hard freeze in the mid-20 degree F range, but in most years it will not have time to produce viable grain. In very mild winters, however, much of the spring oats planted in the fall might survive the winter in southern Kansas.

Spring oats can be utilized in the fall for either hay or grazing. Spring oats can be ready to graze 6 to 8 weeks after planting with adequate moisture and after a good crown root system has developed. Under good conditions, spring oats can produce up to 1 to 2 tons of forage per acre, but as planting is delayed past early August, expect less tonnage. Spring oats are not very drought-tolerant, and will not establish well or produce much forage if soils are very dry. Rye and barley are more drought-tolerant than spring oats.

Spring oats can also be planted in a mixture with a winter small grain. The spring oat will produce most of the forage in the fall and then most likely winter kill. The winter small grain will overwinter and produce forage in the spring. Winter small grain biomass production might be less than planted alone, but the combination of oat and winter small grain biomass will most likely be higher than winter small grain planted alone. If a mixture is used, plant oats at a 50% seeding rate and winter small grain at 100% seeding rate.

Spring oats should be seeded at the rate of 2 to 3 bushels (64 to 96 pounds) per acre. About 30 to 70 pounds of nitrogen (N) per acre will be adequate depending on forage potential and if no excess N is available in the soil.

Oat pasture can generally carry 500 pounds of beef per acre. Average daily gains range from 1.5 to 2.5 pounds per head per day. Forage quality on actively growing oats is high, with protein content in the range of 20 to 25%.

Oats are fairly susceptible to atrazine, so if producers plan on planting oats this fall after corn or sorghum, there is risk of herbicide carryover that can kill seedlings.

Winter wheat. Wheat is often used for grazing and grain in so-called “dual-purpose” systems (Figure 1). These kinds of systems are usually balanced between getting good forage and good grain yields without maximizing yields on either side. Dual-purpose wheat is typically planted at a higher seeding rate and at least two weeks earlier than wheat planted for grain only, which can increase the risk of a wheat streak mosaic infection. In addition, producers wanting both grazing and grain should use a higher-than-normal seeding rate and increase the N rate by 30 pounds per acre for every 1,000 pounds forage yield.

Figure 1. Cattle grazing on a wheat field. Photo courtesy of Great Plains Grazing.

Producers who need more pasture than normal can plant even earlier, at the likely expense of lower grain yields. Planting very early opens wheat to many risks, such as wheat streak mosaic, barley yellow dwarf, Hessian fly, grasshopper damage, and common root rot. If beef prices are more favorable in the spring, wheat can also be grazed out, foregoing grain yield altogether. Wheat usually produces most of its forage in late fall and early winter, and again in the spring. There are differences among varieties in how much fall forage is produced. Grow an awnless variety if planning on grazing the wheat out. For more information on dual-purpose wheat, please refer to the eUpdate article, “Managing wheat for forage and grain: the dual-purpose system”.

Winter barley. There are now new, improved varieties of winter barley available with better winterhardiness, especially under grazing. Many of the newer varieties also produce more forage than older varieties. Barley produces palatable growth rapidly in the fall under favorable conditions. It is considered supe­rior to other cereals for fall and early winter pasture, but wheat, triticale, and rye provide better late winter and spring grazing. Barley has excellent drought and heat tolerance. Winter barley forage is typically the most palatable of the small grain cereals and feed quality is the highest, although tonnage of barely is usually less then triticale or rye.

Winter rye. Rye establishes fall pasture quickly. It also regrows rapidly in late winter and early spring. However, rye becomes “stemmy” and unpal­atable earlier in the spring than other cereals. Since rye is less palatable and higher in fiber than wheat or barley, cattle gains during grazing are normally greater on oat, wheat, triticale, and barley pasture than on rye pasture. Rye is the hardiest of the small grain cereals for overall tolerance to drought, heat, winterkill, and poor soil conditions.

Winter triticale. Triticale, a cross between wheat and rye, possesses the toughness of rye along with the quality of wheat. It can be grazed much harder than wheat and still recover to produce grain. Triticale and rye can be planted about a month earlier than wheat with a decreased risk of wheat streak mosaic (while the triticale might not show symptoms of wheat streak mosaic virus infection, it may vector the mites that might affect a neighboring wheat field). However, there is still risk to grasshopper feeding in the fall, hessian fly, barley yellow dwarf, or root rot. Planting triticale (Figure 2) or rye earlier in the fall increases the amount of fall forage available compared to winter wheat. Triticale has longer effective spring grazing than rye, but not as long as wheat. Depending on the variety, winter triticale will head later than rye so the forage can remain higher in quality later into the spring. Heading date on all winter cereals should be a consideration if spring grazing is the goal.

Figure 2. Cattle grazing on a triticale research field. Photo courtesy of John Holman, K-State Research and Extension.

Small grain pasture management

As planting dates get later in the fall, producers will get more fall forage production from triticale and rye. The later it gets; the more rye becomes the best option for fall forage needs.

When planting a small grain cereal primarily for forage, use a seeding rate about 50-100 percent higher than if the crop were grown for grain. In western Kansas and under dry soils conditions, a seeding rate of 1.5 bu/acre is recommended. In eastern Kansas or under irrigation, a seeding rate near 2 bu/acre is recommended. When planting a small grain cereal for grazing purposes, increase N rates by about 30 to 50 lbs/acre. To determine the actual amount of additional N needed, the following formula can be used:

Additional lbs N/acre = (Number of animals/acre) x (lbs of weight gain/animal) x 0.4

In a graze-out program, all the N may be applied in the fall. However, split applications will reduce the chances of having a problem with nitrate toxicity. In addition, there may be excess N in the fall from failed summer crops, so producers should use caution when putting on N without a profile N soil test.

Under good growing conditions, a well-fertilized small grain dryland pasture can carry about 500 pounds of cattle per acre. Under poor growing conditions, stock­ing rates should be reduced considerably. Cattle gains of 1.5 to 2.5 or more pounds per acre per day are possible dur­ing periods of good pasture production. Under irrigation, with intensive management, much higher stocking rates are attained.

Fall grazing management is critical to the success of small grain pastures. Begin grazing when the plants are well rooted and tillered, usually about 6 to 8 weeks after planting. If the foliage is too tall when the animals are introduced, or if the crop is over­grazed, the plants will be more susceptible to winterkill. Make sure some green leaves remain below the grazing level. The minimum stubble height should be about 3 to 4 inches. Rye has a more upright growth pattern than most wheat varieties, so it should not be grazed as low. Winter barley is more susceptible to winterkill than rye or wheat. However, newer varieties of barley are exhibiting increased winter hardiness.

In terms of overall forage quality of hay, barley is highest, followed by oats, wheat, triticale, and rye. Yet, the forage quality of all small grains in the vegetative stage is more than sufficient for any grazing animal. During the fall and early spring periods of peak production, the crude protein content of small grain pasture is nor­mally about 20-25 percent. Growing cattle require about 12 percent crude protein, thus no protein supple­ments are necessary.

Small grain pastures can cause bloat. Daily supplementation with poloxalene (Bloat Guard) is highly effective in reducing bloat and is available in many different feeding forms. Feeding high-quality grass hay, silage, and/or an ionophore such as Rumensin or Bovatec can also provide some protection against bloat. Rumensin and Bovatec have also been shown to increase stocker cattle weight gains on wheat pasture.

Cows with high milk production grazing small grain pasture in the spring can experience grass tetany. To prevent this, provide a mineral supple­ment containing magnesium. Cattle should be started on the mineral two weeks prior to the risk of grass tetany.

By: Romulo Lollato, Wheat and Forages Specialist
John Holman, Cropping Systems Agronomist
Jaymelynn Farney, Southeast Area Beef Specialist

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marit34KSU Research and Extension: Small grain forage options

Maybe They Meant Global Wettening?

Wheat and More….or Less blog
by Vance Ehmke

Some years back when they first started talking about Global Warming I asked the state climatologist, who was in K-State’s physics department, what he thought.  He said, “We’ll know for sure….in 100 years.”

Right now, though, after the wettest October and the wettest May in Kansas history, and the slowest planting in US history, maybe instead of Global Warming we should be talking about Global Wettening.

With right at 30 inches of total precip last year, 2018 was the wettest year in all of the 44 years that we’ve been farming here in western Lane County. That trend continues into 2019. Normally to date we would  have gotten a little over 6 inches of rain and snow melt, but we’ve already over 10 inches.

And with May and June being the wettest two months of the year, I’m getting nervous about what wheat harvest is going to look like.

This is a lot like the winter of 1992-1993 when we got 65 inches of snow—instead of our normal 18 to 20 inches. If all of the winter-received moisture had been snow instead of some coming as rain, this past winter would have been identical to the 65 inches. And as they say, trends in weather are way more likely to continue than to change, so it’s interesting looking at what happened in the rest of l993.

After the very wet winter, crop conditions started off great…but it kept on raining. Consequently wheat harvest was delayed. North central Kansas got 12 to 17 inches of rain in July, for instance. Statewide, substantial acreages were lost, yield prospects plummeted and quality declined. By August 1, 10% of the Kansas wheat crop was still in the field.

And while it was wet here this past winter, we have no idea as to what it was like north and east of Kansas. A University of Nebraska agronomist stopped here last week and told me of 60 and 90-ton chunks of ice that eastern Nebraska farmers found in their fields—over 5 miles from the rivers. They’re hoping the ice will be melted by the end of summer! Also entire fields covered with 2 to 6 and 8 feet of sand. We got off easy.

So what is going on? Over the past several years, our weather has varied from extremely wet to extremely dry to extremely wet to extremely dry and here we are now being extremely wet. I’ve talked to several K-State professors about the extremes we’re experiencing and they all say this is exactly what was predicted to happen with global climate change.

This winter I heard Jeff Hutton with National Weather Service in Dodge City talk about our recent weather. He said never before have we had more than 3 years in a row of above average conditions for rainfall and summer row crop conditions. “However, we just went through the fifth.”

Those remarks remind me a lot of what I call The Nice Nineties. Back then we had nine years of wetter than normal conditions which resulted in very high corn and sorghum yields. But the longer the trend continued, the more concerned I got. Statisticians and accountants often talk about “gravitating to the means.” What that means is that over time, things average out. And when it came time to average out the nineties, it was ugly. I call those following years The Naughty Aughts. In at least one of those years, the entire sorghum crop was lost. In another year, you harvested only half the acres planted. I still remember farmers swaggering into the coffee shop to brag about their top field—that made 30 bushels per acre!

But the statisticians were right. The nine good years combined with the nine bad years resulted in a perfect long term average. So when are we going to start gravitating?

All this reminds me on another conversation I had years ago with no-till guru Virgil Simpson in Ransom, Kan. As we were driving around looking at his fields during one of those wet years, he said things looked then a lot like they did in 1951, an incredibly wet year with regular flooding. Virgil said we all remember how wet it was. But he says what we all forgot is that after 1951 was done with us, we had to wait another 2 or 3 or 4 years before we saw our next spring rain. In this case, the wet years ushered in a vicious drought. While shorter than the drought of the thirties, the drought of the fifties was incredibly sharp.

And finally, Virgil’s comments about drought brought to mind a conversation with a Texas Panhandle farmer during the drought of the Naughty Aughts. Back then he said he had given up on praying for rain. He said he was now praying for dust…because that prayer worked every time.

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marit34Maybe They Meant Global Wettening?

The Bones of Lane County

By Vance Ehmke

My great grandparents homesteaded here in western Kansas back in 1885. I always thought it was a pretty big deal to be a fourth-generation farmer — until the bones of Lane County told me otherwise.

Here on our farm we have a state historical site, 14 LA 311, to be exact. It’s one of the tallest points around, surrounded by 6 to 15 percent slopes. But what makes it a turbocharged Native American campsite is that wrapping around it are a number of playa lakes including a 125-acre lagoon.

The prehistorical Native Americans figured it out pretty quick: As long as there is water in those ponds, we no longer have to hunt. Everything will come to us — including mammoths, camels, prehistoric horses, the modern bison, as well as its gigantic predecessor the longhorn bison, along with deer, elk, turtles and waterfowl you can’t believe.

We’ve found bones from all those species, as well as evidence from 10 to 15 different Native American cultures spread out over thousands of years. We’ve been here four going on five generations, but we weren’t the first by a long shot. The archeologists tell me there were 400 to 500 generations here before us. I’ve got a black-flint Goshen spear, or dart point, in our collection that could be as much as 11,000 years old. I don’t know where that Native American was born, and I don’t know where he died. But for at least part of his life, he called Lane County home.

In that general area, our family and archeology teams have found a good deal of artifacts over the years — for instance, Native American artifacts stretching from Apache all the way back to the ancient tribes of Clovis and Hell Gap. The Clovis hunted mammoths in Lane County at the end of the last Ice Age, but the Hell Gap did not since mammoths had become extinct by the time they arrived. Louise and I found a mammoth tooth on the hill that later was identified as a Columbian mammoth, the largest of the mammoths living 10,000 to 12,000 years ago. At shoulder height, it stood 12 to 15 feet tall and weighed 10,000 to 20,000 pounds. That’s a lot of meat!

Additionally, we’ve found many other fascinating prehistoric markers like huge bison bones, teeth and foot bones from the prehistoric horse, turtle shells and some occasional ivory. I love the clink of ivory shards! We’ve also found a fair amount of burned bone as well as tiny little snail shells. The archeologists who visit the site tell me they are a lot more excited about early horse artifacts than mammoths because every year somewhere in Kansas someone finds a mammoth. Horses are just rare.

By the way, species like the horse and camel originated in the central and southern High Plains, later becoming extinct here but only after escaping likely out the Bering Strait. Poetically, the Spanish brought the horse back to its birth place 400 to 500 years ago. When it became extinct, it was about the size of a small Quarter Horse.

You can find evidence of more recent Native American cultures like Apache at ground level. Same with Comanches, who drove out the Apaches. After the Comanches crossed the Arkansas River heading south for the last time, the last of the Plains tribes moved in: Sioux, Cheyenne, Kiowa, and Arapahoe, but they were now using metal points that have mostly rusted away.

But if you’re looking for the really old cultures and the really old bones, you’ve got to dig for them. That’s because about 7,000 years ago our climate changed to a 2,500-year period of severe and long-lasting droughts accompanied by incredible dust storms that brought in our present topsoil on suffocating winds out of the northwest. When they say wind-blown loess, they are not kidding! Anybody who’s ever dug a pit for a grain bin or a trench silo can easily spot the 2- to 3-foot thick layer of dark soil on top of the yellow paleo soil.

When digging a basement for an addition to our house some years back, I spotted a mammoth tooth lying on top of the yellow soil — right where it was supposed to be. It’s always fun walking new terraces or waterways looking for prehistoric bones. Layton found a 10,000-year-old Hell Gap spear point made out of Smoky Hill jasper on such a walk. And let me tell you what, finding artifacts like that is every bit as thrilling as finding a $100 bill blowing down the street!

This past spring while digging some 15-foot deep pits for grain bins, I found what appeared to be some kind of vertebrae, which the Sternberg Museum in Hays initially identified as from a 10-million-year-old rhinoceros or early ancestor of the camel or giraffe. Others at the Sternberg instead say it may be another 10,000-year-old mammoth.

Some years back a neighboring farmer got the urge to use his earth-moving equipment to dig the 75 to 100 feet to the groundwater table. After hearing about his gigantic hole and dirt pile, Louise and I visited the site and instantly found an unearthed mammoth tooth lying on the ground. We took it to town, gave it to him and he said, “Oh, that’s nothing. There are bones all the way down to the bottom.”

We don’t have any T-Rexs or other dinosaurs here in Lane County because most of Kansas was under an inland salt sea during that time frame (60 to 90 million years ago). Instead, you’ll find some of the best shark teeth and mosasaurus hunting in the world in Gove County to the north. When the Rocky Mountains rose up from tectonic activity, the sea was drained and left the prairie grasslands as we know it today.

While we’ve found tons of animal bones, there is always the possibility that human bone is out there, too. According to oral history, a family of black settlers homesteaded on some of our land, but they all died from a measles infection. A witcher from central Kansas volunteered to find the graves. He located all seven family members plus three Native American graves on the historical site a half mile away. Skeptical about witching, I called a physics professor at K-State and asked what he thought about divining. I was surprised when said there might just be something to it.

So what does all this mean? Anytime you’re digging a hole, dig carefully. You never know what you’re going to find. Could be a mammoth tooth, a Native American spear head or knife point or some other link to our past. You just never know. But you’d better be looking!

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marit34The Bones of Lane County